Fuels and Combustion

A. Moisture
B. Ash
C. Volatiles
D. Carbon

A. Exothermic
B. Endothermic
C. Autocatalytic
D. None of these

A. Gravimetric analysis of flue gas
B. Finding out combustion efficiency
C. Direct determination of nitrogen in flue gas by absorbing it in ammoniacal cuprous chloride
D. None of these

A. 60
B. 160
C. 500
D. 750

A. CO
B. CH4
C. CO2
D. S

A. 8800 kcal/m3
B. 8800 kcal/kg
C. Same as that of coal middling
D. 25000 kcal/kg

A. The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot
B. It reduces its calorific value tremendously
C. It reduces its flame temperature tremendously
D. There are chances of explosion during preheating

A. Bomb
B. Boy’s
C. Junkers
D. None of these

A. 500
B. 1500
C. 6500
D. 20000

A. Controlling the excess air
B. Oxygen enrichment of combustion air
C. Using low c.v. fuels
D. Maintaining proper draft in the furnace